“The last wild ancestor of modern domesticated cattle was the aurochs. Unlike present-day bovines, aurochs were fast, aggressive, and utterly unafraid of humans.”

“Attempts to breed the aurochs back into existence began in the 1920′s and 30′s. These experiments showed that, by selecting for coarse and unrefined traits, it is possible for an animal to revert to a primitive and feral state in surprisingly few generations.”